Heater Cores and Blower Fans
Ford Expedition
Ford Expedition XLT
Ford F-250

How do you remove the heater core on a 99 Expedition?

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2010-12-11 00:50:38
2010-12-11 00:50:38

Queegebo.com has a very helpful tutorial here: http://www.queegebo.com/cars-a-other-vehicles-articles-top-166/31-1997-ford-f-150-46.html

Search google and you will find a few very good videos on how to do this.

I thought my core was going bad - got the stinky smell from my AC vents - did some looking here on the web and found a tip to turn on the heat - that confirmed it for me as the huge billowing mist or smoke came out - called pep boys just now - they want 1000 bucks to fix - 721 for labor - 150 for AC dump and recharge (not sure this is needed) and then 72 bucks for the part. Good luck.

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Related Questions


Drain the radiator. Disconnect the heater hoses. Remove the screws holding the heater core case and remove the whole assembly. Remove the core and install the new on in the case. Reverse the procedure to finish the installation.

REMOVE CENTER CONSOLE REMOVE AIR BAGS REMOVE ENTIRE DASH REMOVE HEATER BOX REMOVE HEATER CORE INSTALLATION IS SAME IN REVERSE...I'M DOING MINE RIGHT NOW. -JAY

Open up both front doors and remove everything from the front seat to the firewall, no kidding.

That is called a quick disconnect fitting and it requires a SPECIAL tool to get it loose.

The dash has to be remove and the evaporator/ heater case has to be removed and separated. This job is best left to a repair shop.

The problem is the blend door, not the heater core. Any mechanic worth anything should have checked and replaced the blend doors while it was apart to replace the heater core. Check heatertreater.net for diagnostic information and some real help.

i believe my 99 calls for like 10 hours labor. gott aremove the front fender etc. pain in the butt IF YOU REMOVE THE FRONT FENDER TO GET TO THE HEATER CORE YOU MUST BE POLISH, THE HEATER CORE IS BEHIND THE DASH INSIDE THE DUCTING, YOU MUST DROP THE STEERING COLUMN AND REMOVE THE DASH (7SCREWS) PULL THE DASH BACK TO GET ACCESS TO THE HEAT AND AIR DUCT AND THEN REMOVE THE TOP OF DUCT AND THEN YOU WILL SEE YOUR HEATER CORE

If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core. When a heater core leaks, a new heater core is installed or the old one repaired. Heater Housing * The heater housing is usually under the dash and must be removed to gain access to the heater core. * Procedures for replacing the heater core vary with the year, make, and model of the car It therefore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement. The heater housing is disassembled to get to the heater core. Heater Core * Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core. * Remove the heater coolant hoses. * Remove the cable and/or vacuum control lines (if equipped). * Remove the heater core securing brackets and/or clamps. * Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing. * To reinstall the heater core, reverse the removal steps. When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation. I have included a picture diagram above. Good luck.

Before CHanging the Heater Core, have you tried flushing it? I have a 99' Jimmy and have to do this every year to get my heater to work.

how do you change the heater core on a 99 cadillac deville? I need to know, "Kaiser."

With a quick disconnect tool. Your local auto parts store has them and they are not expensive.

Yes, just connect the heater hoses together.

Is it the early '99 mk3 or the later '99 mk4?? Either way you have to remove the I/P (dash) and heater box. On the Early 99 you have a large brace to deal with before removing the heater box. On either model the A/C refrigerant has to be recovered and that requires a shop with special equipment. Good Luck.

Take it to the dealer. Take it to the dealer.

Don't remove it if you aren't getting heat. Just take the two hoses off the heater core (at rear of engine going through the fire wall on passenger side) and blow compressed air through both inlets on it. It would also be a good idea to change the thermostat also.

Your heater core is likely bad

Yes, just connect the two heater hoses together.

Suspect a plugged up heater core then.See "Related Questions" below for more

Low coolant? Defective thermostat? Heater core "airbound"? Water pump circulating coolant? Selector switch working? Temperature control cable?

Changing the heater core requires complete removal of the dash panel and plenum box. To do this you have to remove the steering wheel, steering column, evacuate and recharge the refrigerant system and drain the radiator. I would only consider changing the heater core if it is physically leaking into the passenger compartment. If the problem is heat transfer to the HVAC system only, the problem is more likely with the blend doors.

The most common reason the heater is blows cold air on a 1999 Ford Winstar is a bad thermostat or blocked heater core.

Water on the floor can be caused by a leaking windshield, a bad heater core, or a plugged drain line for the air conditioning condensation. If the water is warm when it comes out, or smells sweet, it is from the heater core.


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